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Common Shares - Dividends (Details) - $ / shares | Dec. 23, 2020 | Nov. 03, 2020
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Share Capital, Reserves And Other Equity Interest [Abstract] |  |
Dividends declared per share | $ 0.0450 | $ 0.0425

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- Definition The amount, per share, of dividends proposed or declared before financial statements were authorised for issue but not recognised as distribution to owners. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 137 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_137_a&doctype=Standard -URIDate 2019-03-27 + Details
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Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Share Capital, Reserves And Other Equity Interest [Abstract] + References No definition available. + Details
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Namespace Prefix: | tac_
Data Type: | xbrli:stringItemType
Balance Type: | na
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